Robot cleaner



FIG. 1 is a perspective view of a robot cleaner, showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a left-side, elevational view thereof;

FIG. 4 is a right-side, elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a perspective view of the robot cleaner, showing a second embodiment of our new design;

FIG. 8 is a front elevational view thereof;

FIG. 9 is a left-side, elevational view thereof;

FIG. 10 is a right-side, elevational view thereof;

FIG. 11 is a top plan view thereof;

FIG. 12 is a bottom plan view thereof;

FIG. 13 is a perspective view of the robot cleaner, showing a third embodiment of our new design;

FIG. 14 is a front elevational view thereof;

FIG. 15 is a left-side, elevational view thereof;

FIG. 16 is a right-side, elevational view thereof;

FIG. 17 is a top plan view thereof;

FIG. 18 is a bottom plan view thereof;

FIG. 19 is a perspective view of the robot cleaner, showing a fourth embodiment of our new design;

FIG. 20 is a front elevational view thereof;

FIG. 21 is a left-side, elevational view thereof;

FIG. 22 is a right-side, elevational view thereof;

FIG. 23 is a top plan view thereof; and,

FIG. 24 is a bottom plan view thereof.

The broken lines show portions of the robot cleaner that form no part of the claimed design. 

CLAIM We claim the ornamental design for a robot cleaner, as shown and described. 